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A deadly bird flu strain killed southern elephant seals on Heard Island, but mainland Australia remains unaffected.
A deadly H5N1 bird flu strain has been confirmed in southern elephant seals on Heard Island, a remote Australian territory, following unusual mortality observed in October.
Testing by the CSIRO confirmed the virus, which is part of the highly contagious 2.3.4.4b clade.
The discovery, while concerning, does not significantly increase risk to mainland Australia, which remains free of the strain.
Officials stress ongoing vigilance, biosecurity, and international cooperation, with a follow-up expedition planned for December 2025 to assess wildlife and environmental impacts.
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Una cepa mortal de gripe aviar mató a los elefantes marinos del sur en la isla de Heard, pero el continente australiano permanece no afectado.